package bid.yanhj.springboot.controller;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import bid.yanhj.springboot.po.User_old;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

@RestController
// @Controller
// @ResponseBody
@RequestMapping("/users")
@SpringBootApplication(scanBasePackages = {"service"})
public class UserController {

    // 创建线程安全的Map
    static Map<Long, User_old> users = Collections.synchronizedMap(new HashMap<Long, User_old>());

    /**
     * 获取用户信息.
     * 
     * @return
     */
    @ApiOperation(value="获取用户列表", notes="")
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public java.util.List<User_old> getUserList() {
        // 处理"/users/"的GET请求，用来获取用户列表
        // 还可以通过@RequestParam从页面中传递参数来进行查询条件或者翻页信息的传递
        ArrayList<User_old> list = new ArrayList<User_old>(users.values());
        return list;
    }

    /**
     * 创建用户.
     * 
     * @param user
     * @return
     */
    @ApiOperation(value="创建用户", notes="根据User对象创建用户")
    @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
    @RequestMapping(value = "/", method = RequestMethod.POST)
    public String postUser(@ModelAttribute User_old user) {
        // 处理"/users/"的POST请求，用来创建User
        // 除了@ModelAttribute绑定参数之外，还可以通过@RequestParam从页面中传递参数
        users.put(user.getId(), user);
        return "success";
    }

    /**
     * 根据id查询一个用户
     * 
     * @param id
     * @return
     */
    @ApiOperation(value="获取用户详细信息", notes="根据url的id来获取用户详细信息")
    @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long")
    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public User_old getUser(@PathVariable Integer id) {
        // 处理"/users/{id}"的GET请求，用来获取url中id值的User信息
        // url中的id可通过@PathVariable绑定到函数的参数中
        return users.get(id);
    }

    /**
     * 根据id更新用户.
     * 
     * @param id
     * @param user
     * @return
     */
    @ApiOperation(value="更新用户详细信息", notes="根据url的id来指定更新对象，并根据传过来的user信息来更新用户详细信息")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long"),
            @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
    })
    @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
    public String putUser(@PathVariable Long id, @ModelAttribute User_old user) {
        // 处理"/users/{id}"的PUT请求，用来更新User信息
        User_old u = users.get(id);
        u.setName(user.getName());
        u.setAge(user.getAge());
        users.put(id, u);
        return "success";
    }

    /**
     * 根据id删除用户.
     * @param id
     * @return
     */
    @ApiOperation(value="删除用户", notes="根据url的id来指定删除对象")
    @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long")
    @RequestMapping(value="/{id}", method=RequestMethod.DELETE)
    public String deleteUser(@PathVariable Long id) {
        // 处理"/users/{id}"的DELETE请求，用来删除User
        users.remove(id);
        return "success";
    }

    /**
     * 模板这个没有启动作用.
     * @param map
     * @return
     */
    @RequestMapping(value = "/say")
    public String index(ModelMap map) {
        // 加入一个属性，用来在模板中读取
        map.addAttribute("host", "http://blog.didispace.com");
        // return模板文件的名称，对应src/main/resources/templates/index.html
        return "index"; 
    }
}
